Equipment and Leasehold Improvements (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Schedule of components of equipment and leasehold improvements

Equipment and leasehold improvements consist of the following:

	As of December 31,
	2019			2018
Machinery and equipment	$	16,126		$	15,513
Office equipment		855			840
Office furniture		110			110
Leasehold improvements		4,839			4,839
Construction in progress		163			97
		22,093			21,399
Less: Accumulated depreciation and amortization		(19,838	)		(19,534	)
	$	2,255		$	1,865